Warning: Spoilers ahead for Doctor Who episode seven, The Legend of Ruby Sunday. The first half of the epic two-part Doctor Who finale starring Ncuti Gatwa as the Fifteenth Doctor and Millie Gibson as mysterious companion Ruby Sunday has left fans shocked after a major villain reveal. The episode saw the Doctor and Ruby arrive at UNIT headquarters to meet Kate Lethbridge-Stewart (Jemma Redgrave) and get to the bottom of their universe-wide stalker.
The character, played by Susan Twist, has popped up in various forms across the season including as an AI ambulance, a hiker in Wales and Lindy Pepper-Bean’s mother. In today’s episode, she appeared as a woman also named Susan, the founder of S Triad Technology who is planning to release her company’s software for free, worldwide. The Doctor was left wondering if she was the granddaughter he travelled with as the First Doctor back in 1963 (played by William Hartnell) who has the same name.
Soon enough the space-and-time travelling duo put the pieces together and realised this enigmatic figure could be linked to the mystery behind Ruby’s birth – who her biological mother is. Ruby was abandoned by a disguised cloaked figure on a church doorstep on Christmas Eve in 2004, partially the setting for the Christmas special The Church on Ruby Road, but they are yet to discover the abandoner’s identity. At the end of today’s episode, – after managing to return to that fateful day via a time window – everything went wrong wh.
